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Researchers grow replacement body parts

Dr. Anthony Atala holds the "scaffolding" for a human kidney created by a 3-D printer in a laboratory at Wake Forest University in Winston-Salem, N.C., on Wednesday, May 8, 2013. The university is experimenting with various ways to create replacement organs for human implantation, from altering animal parts to building them from scratch with a patient's own cells. (AP Photo/Allen Breed) ORG XMIT: NY301

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Researchers grow replacement body parts

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Dr. Anthony Atala holds the framework for a human kidney created by a 3-D printer in a laboratory at Wake Forest University on May 8 in Winston-Salem, N.C. The university is experimenting with various ways to create replacement organs for human implantation, from altering animal parts to building them from scratch with a patient's own cells.
Allen Breed, AP

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A computer displays an image of the framework for a human ear being created by a 3-D printer.
Allen Breed, AP

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The synthetic biodegradable framework for a replacement nose sits on a bench in a laboratory at Wake Forest University.
Allen Breed, AP

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A 3-D printer lays down a biodegradable matrix that will be seeded with cells to create a human ear.
Allen Breed, AP

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The "scaffolding" for a human ear emerges from a 3-D printer in a laboratory at Wake Forest University on May 8.
Allen Breed, AP

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Claudia Irizarry plays with her daughter, Angela, on May 23 in Lewisburg, Pa. Two years ago, Angela needed a crucial blood vessel. Researchers built her one in a laboratory, using cells from her own bone marrow. Today, the 5-year-old sings, dances and dreams of becoming a firefighter or a doctor.
Ralph Wilson, AP

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Dr. Anthony Atala holds the framework for a human kidney created by a 3-D printer in a laboratory at Wake Forest University on May 8 in Winston-Salem, N.C. The university is experimenting with various ways to create replacement organs for human implantation, from altering animal parts to building them from scratch with a patient's own cells.